Former for pipe-molding apparatus



UNITED STATES PATENT OFFICE.

ANDREW II. -MCNEAL `AND WILLIAM A. sTINERUoK, or BURLINGTON, NEW JERSEY.

FORMER FoRP-IPE- MOLDING APPARATUS.

sPEcIFIeATIoN forming part ef Lettere Patent Ne. 402,029, dated April 2s, 1889.

Application filed April 23, 1887.

.T0 all whom t may concern:

Be it known that we, ANDREW H. MCNEALl and WILLIAM A. STINERUCK, both 'of Burling-` ton, in the county of Burlington and State of New Jersey, have invented a new and valuable Improvement in Formers i for Pipe-Molding Apparatus; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings,` making a part of this specification, and to the letters and gures of reference marked thereon.

Our invention has relation to molding apparatus for the manufacture of pipe or cylindrical castings of any kind of the form wherein a former having a pressing face or faces on its periphery is rotated within a stationary flask to compress the sand therein to the requisite form for receiving the core. These pressing-faces of the former have been made integral therewith,and as these pressing-faces rotate against and compress the sand in the flask they are subjectedto so much friction that they rapidly wear away or deteriorate and soon become useless, which necessitates throwing the former away and replacing it by a new one. The wear of the pressing-faces is in practice so rapid that in many instances a new former is required every three or four days, and as these for1ners,with their integral pressing-faces,-are expensive to make the cost of frequently replacing the worn-out formers with new ones adds greatly to the cost of manufacture.

Our invention has for its object to avoid said described objections, and to accomplish the same we make the pressing-faces of the former separate from it and secure the faces. to it parallel` to its axis and to each other and flush with the surface of the former, and extend them from toplto bottom of the former,

' so that they are easily removable therefrom.

When these removable pressing plates or surfaces are worn, they are removed and replaced by new ones `without .necessitating a new former every time new or fresh pressing faces 'or surfaces are required.

Serial No. 235,856. (Model.)

provide such described construction of former with a' sleeve or slicker for the lower end of the former, which slicker is separate from the former and removable therefrom to admit of it being easily and cheaply replaced when worn.

Our invention accordingly consists of the combination, construction, and arrangement of parts comprising a former for a pipe or cylinder molding apparatus of the form described, as hereinafter more fully set forth and claimed.

Reference being had to the accompanying drawings, Figure l is a vertical section, partly in elevation, of flask and former embodying our improvements, and Figs. 2, 3, el, and 5 are sections on the lines l l, 2 2, 3 3, and 4 4, respectively. Fig. 6 is a vertical section of the lower part of former, slicker, and bell-mouth former; and Fig. 7 is a horizontal section of former, showing a packing under the faces.

A represents the stationary iiask; B, the base-plate; C, the tubular rotating former having an angular bore and parallel pressingfaces c, the advance edges c2 of which are flush with its surface; and D, t-he lower end former for the bell-mouth, all of which are arranged for operation in the usual manner, except as hereinafter noted.

The angular shaft or rod f for the former C passes down through the bore of the same to near its bottom, as shown in Fig. l. The lower end of the former C is reduced in diameter,

The pressing-faces c of the former are made i worn out and replacement by new ones. These removable pressing-faces may be of chilled iron, steel, or other suitable material, and one or more plates, c, arranged parallel and contiguous to one another, may be used for each face, as indicated at y, Fig. 1. The object in having two pressing faces or plates on the lower part of the former is that the wear is greater near the bottom. of the former than near the top and extends farther around its circumference, and therefore it needs a greater extent of protection.

To facilitate the former being used for different sizes and weight of pipe or cylinders, packing, c', preferably of rubber, may be inserted underneath the removable pressingfaces c c. The packing laid under the pressing-faces preferably is in wedge-shaped pieces, thereby raising the outer edge of the removable pressing-faces and leavin gtheinner edge Hush with the former, and the packing is then bolted or screwed down under the removable pressing-faces against the former.

The former and its removable faces maybe constructed and arranged as desired to suit the work to be done. In the drawings the former shown has a smooth or cylindrical upper end fitting in the bearing F, in which is located the clean sing-brush hand a uted central part or portion for the flask.

As the former is raised out of the mold, the slicker G rises with it and smooths the walls of the mold as it is drawn or elevated through the same.

l. A vertically-arranged pipe-former having removable pressing-faces parallel with the axis, and the advance faces iush with the surface of the former.

2. A vertically-arranged pipe-former having removable pressing-faces, the advance edges of which are flush with the surface and the lower part provided with two faces contiguous to each other, for the purpose set forth.

3. The former C, having separate and removable parallel pressing-faces c c, extending from top to bottom of the former, and packing, c', between the faces and former, substantially as and for the purpose set forth.

In testimony that we claim the above we have hereunto subscribed our names in the presence of two witnesses.

ANDREW l-l. MCNEAL. YILLIAM A. STINERUCK.

lVitnesses:

F. P. F. RANDOLPH, FRANK L. JoHNsoN. 

